Alloy 20 Flange
JN ALLOY supplies alloy 20 SO flanges, alloy 20 WN flanges, UNS N08020 blind flanges, 2.4660 alloy 20 plain flanges, ASME SB462 Alloy 20 UNS N08020 SW flanges, alloy 20 spectacle blind flanges, alloy 20 threaded flanges, 2.4660 spacer ring, UNS N08020 paddle blind/blank, alloy 20 bleed/test/drip ring, alloy 20 reducing flange.
Alloy 20 flange (UNS N08020, 2.4660) refers to a high-performance pipe connection component designed for extremely corrosive environments. UNS N08020 is widely used in the fields of chemical, petrochemical, pharmaceutical and marine engineering. The alloy 20 flange is made of nickel-based alloy material, and its typical composition is 35% nickel, 20% chromium, 3.5% copper, 2.5% molybdenum and a small amount of niobium stabilizing elements. This unique element ratio makes it exhibit excellent corrosion resistance in sulfuric acid, phosphoric acid, nitric acid and mixed acid environments, especially in high-temperature media containing chlorides and halogen ions. Jinie Technology (Jiangsu) Co., LTD supply all different types and scales of flanges. Please feel free to contact us for further product information and pricing.
UNS N08020 Manufacturing Process
The manufacturing process of Alloy 20 Flange strictly follows the ASTM B473 standard, and the impurity content is controlled by the vacuum arc remelting (VAR) process to ensure that the material purity reaches more than 99.9%, and the intergranular corrosion sensitivity is significantly reduced.
Alloy 2.4660 Flanges Types
Alloy 20 flanges cover more than 2500 pressure levels from Class 150. Common types include weld neck flanges (WN), socket welding flanges (SW) and lap-joint flanges (LJ). The sealing surface types can be selected from RF, FF, and RTJ to meet the needs of different working conditions.
Alloy 20 Flanges Application
ASME SB462 Alloy 20 Flanges are widely used in various industries, including oil and gas, chemical, and food. They connect pipes, valves & other equipment and are commonly found in piping systems for offshore platforms, refineries, and power generation plants.
Specifications of Alloy 20 Flange
|
Specifications |
ASTM B564 / B462, ASME SB564 / SB462 |
|
Standards |
ASTM, ASME, ANSI, JIS, DIN, BSNA 11, EN Ni 99.2, JIS NW 2200, GOST-НП-2 |
|
Dimensions |
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
|
Size |
1/2″NB TO 60″NB |
|
Class |
150#, 300#, 600#, 900#, 1500#, 2500# |
|
Pressure |
DIN PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160. |
|
Flanges Products |
Expander Flanges, Forged Flanges, Blind Flanges, Reducing Flanges, Orifice Flanges, Socket Weld Flanges, Slip On Flanges, Flat Flanges, Lapped Joint Flanges, High Hub Blinds Flanges, Nipo Flanges, Threaded Flanges, Square Flanges, Long Neck Weld Flanges, RTJ Flanges etc |
ASME SB462 Alloy 20 Flanges Equivalent Grades
|
STANDARD |
WERKSTOFF NR. |
UNS |
EN |
AFNOR |
|
Alloy 20 |
2.4660 |
N08020 |
NiCr20CuMo |
Z2NCUD31-20AZ |
Chemical Composition of Grade Alloy 20 Flanges
|
Grade |
C |
Mn |
Si |
S |
Cu |
Ni |
Cr |
Fe |
Mo |
P |
|
Alloy 20 |
0.07 max |
2.00 max |
1.00 max |
0.035 max |
3.00 – 4.00 |
32.00 – 38.00 |
19.00 – 21.00 |
29.85 min* |
2.00 – 3.00 |
0.045 max |
Mechanical Properties of ASTM B462 Alloy 20 Flanges
|
Element |
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
|
Alloy 20 |
8.1 g/cm3 |
1443 °C (2430 °F) |
Psi -80,000, MPa -551 |
Psi - 35,000, MPa - 241 |
30% |
UNS N08020 Flange Sizes Specified by Common Standards
|
Flange Type |
Specifications |
||||
|
ASME/ANSI B16.5 |
ASME B16.47 Series A (or MSS SP-441) |
ASME B16.47 Series B (or API 6052) |
BS 4504 (ISO 7005-1) |
BS 3293 |
|
|
Nominal Pipe Sizes |
|||||
|
< NPS 26 |
>NPS 26 |
>NPS 26 |
DN 10 to DN 4000 |
> NPS 26 |
|
|
Nominal Pressure (Class) |
|||||
|
Class (lb) |
Class (lb) |
Class (lb) |
PN (bar) |
Class (lb) |
|
|
Weld Neck |
150-2500 |
150-900 |
75-900 |
2.5-40 |
150-600 |
|
Slip-on |
150-1500 |
- |
- |
2.5-40 |
150-600 |
|
Blind |
150-2500 |
300-900 |
300-900 |
2.5-40 |
- |
|
Lap Joint |
150-2500 |
- |
- |
6-403 |
- |
|
Socket Weld |
150-1500 |
- |
- |
N/A |
- |
|
Threaded |
150-2500 |
- |
- |
6-40 |
- |
|
Flat/Raised Facings |
As above |
As above |
As above |
As above |
As above |
|
Ring Joint Facings |
150-2500 |
300-900 |
300-900 |
2.5-40 |
300-600 |
|
Other Facings |
150-25003 |
- |
- |
2.5-40 |
- |
Material Testing of UNS N08020 Flange
Jinie Technology (Jiangsu) Co., LTD ensures that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and MacroTest
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test
Alloy 20 Blind flange dimensions class 150 (ASME B16.5)
|
Pipe |
Flange Data |
Raised Face |
Drilling Data |
Weight |
|||
|
Nominal Pipe Size in |
A |
C |
G |
H |
I |
J |
|
|
Outside Diameter |
Flange min Thickness |
Face Diameter |
Number of Holes |
Bolt Hole Diameter |
Diameter of Circle of Holes |
kg/piece |
|
| in mm |
in mm |
in mm |
in mm |
in mm |
|||
|
1/2 |
3.500 88.90 |
0.440 11.20 |
1.380 35.10 |
4 |
0.620 15.70 |
2.380 60.45 |
0.42 |
|
3/4 |
3.880 98.60 |
0.500 12.70 |
1.690 42.90 |
4 |
0.620 15.70 |
2.750 69.85 |
0.61 |
|
1 |
4.250 108.0 |
0.560 14.20 |
2.000 50.80 |
4 |
0.620 15.70 |
3.120 79.25 |
0.86 |
|
11/4 |
4.620 117.3 |
0.620 15.70 |
2.500 63.50 |
4 |
0.620 15.70 |
3.500 88.90 |
1.17 |
|
11/2 |
5.000 127.0 |
0.690 17.50 |
2.880 73.15 |
4 |
0.620 15.70 |
3.880 98.60 |
1.53 |
|
2 |
6.000 152.4 |
0.750 19.10 |
3.620 91.90 |
4 |
0.750 19.10 |
4.750 120.7 |
2.42 |
|
21/2 |
7.000 177.8 |
0.880 22.40 |
4.120 104.6 |
4 |
0.750 19.10 |
5.500 139.7 |
3.94 |
|
3 |
7.500 190.5 |
0.940 23.90 |
5.000 127.0 |
4 |
0.750 19.10 |
6.000 152.4 |
4.93 |
|
31/2 |
8.500 215.9 |
0.940 23.90 |
5.500 139.7 |
8 |
0.750 19.10 |
7.000 177.8 |
6.17 |
|
4 |
9.000 228.6 |
0.940 23.90 |
6.190 157.2 |
8 |
0.750 19.10 |
7.500 190.5 |
7.00 |
|
5 |
10.00 254.0 |
0.940 23.90 |
7.310 185.7 |
8 |
0.880 22.40 |
8.500 215.9 |
8.63 |
|
6 |
11.00 279.4 |
1.000 25.40 |
8.500 215.9 |
8 |
0.880 22.40 |
9.500 241.3 |
11.3 |
|
8 |
13.50 342.9 |
1.120 28.40 |
10.62 269.7 |
8 |
0.880 22.40 |
11.75 298.5 |
19.6 |
|
10 |
16.00 406.4 |
1.190 30.20 |
12.75 323.9 |
12 |
1.000 25.40 |
14.25 362.0 |
28.8 |
|
12 |
19.00 482.6 |
1.250 31.75 |
15.00 381.0 |
12 |
1.000 25.40 |
17.00 431.8 |
43.2 |
|
14 |
21.00 533.4 |
1.380 35.10 |
16.25 412.8 |
12 |
1.120 28.40 |
18.75 476.3 |
58.1 |
|
16 |
23.50 596.9 |
1.440 36.60 |
18.50 469.9 |
16 |
1.120 28.40 |
21.25 539.8 |
76.0 |
|
18 |
25.00 635.0 |
1.560 39.60 |
21.00 533.4 |
16 |
1.250 31.75 |
22.75 577.9 |
93.7 |
|
20 |
27.50 698.5 |
1.690 42.90 |
23.00 584.2 |
20 |
1.250 31.75 |
25.00 635.0 |
122 |
|
24 |
32.00 812.8 |
1.880 47.80 |
27.25 692.2 |
20 |
1.380 35.10 |
29.50 749.3 |
185 |